PEI时，病灶直径小于（）时，于病灶中心注射药液即可弥散至整个病灶？ A.1cm B

男性，45岁，腹部外伤6小时，四肢湿冷，腹肌紧张，全腹压痛及反跳痛阳性，移动性浊音阴性。肠鸣音消失，该病人目前处理不正确的是()。

A．给予抗菌药

B．补充血容量

C．诊断性腹腔穿刺

D．密切监测生命体征

E．给予止痛和镇静剂

阅读理解。

     The reasons for a person's becoming an alcoholic have often been debated by psychologists and other

scientists. But recent studies suggest that the problem of alcoholism (酒精中毒) should also be the focus

of investigation by biologists.

     While such things as hard jobs, boredom, and unhappiness can lead to alcoholism, researchers at a

prominent university have found that there may also be a genetic factor involved in alcoholism. In the study,

children of alcoholic parents were surveyed. The result showed that the children of alcoholic parents were

more likely to become alcoholics themselves than were children of non-drinking parents.

     This evidence in itself is not conclusive (令人确信的) about anything. After all, it may be the constant

exposure (接触) and easy access to alcohol that cause the children of alcoholics to become alcoholics

themselves. But there is more evidence. The study found that children born of alcoholic parents but raised

by non-drinking foster (抚养的) parents also were susceptible to alcoholism. This group of offspring (后

代) was more likely to take up drinking than youngsters who were born of and raised by non-drinking

parents.

     Other evidence found in the study suggests that environment does not play as important a role in the

development of alcoholism as had been previously thought. The study found that the likelihood of alcoholism

was better predicted from the characteristics of the parents than from such environmental characteristics

as type of job or level of income.

1. What is the main point of the passage?

A. To describe the environment in the development of alcoholism.

B. To study the psychological factor in the development of alcoholism.

C. To describe how the children of alcoholic parents become alcoholics themselves.

D. To describe the close link between genetic make-up and alcoholism.

2. According to the passage, what can bring about alcoholism?

A. Biologists' investigation.

B. Non-drinking parents.

C. Hard jobs, boredom and unhappiness.

D. Foster parents' raising.

3. According to the findings of the study, who would be the most likely to become an alcoholic?

A. A person who had a hard job.

B. A person who was born of alcoholic parents.

C. A person who was raised by drinking foster parents.

D. A person who was born of and raised by non-drinking parents.

4. According to the passage, what should the problem of alcoholism be treated as?

A. A psychological problem.

B. An environmental problem.

C. A biological problem.

D. An educational problem.

数学学习中由数字运算到字母运算的转化，属于（）。

A.自上而下的迁移

B.自下而上的迁移

C.正迁移

D.负迁移

E.水平迁移

案情：被告人胡某，男，32岁，某企业职工。2008年9月2日，胡某打麻将输了钱，遂产生了盗窃念头。当晚凌晨三时许，他溜出家门寻找作案机会，发现一豪宅无人看管即撬开窗户爬人室内，盗走古玩字画、金银首饰和大量现金，所窃财物价值和现金共计人民币45万元。胡某作案后畏罪潜逃。在公安机关发布通缉令后，当地公安局组织全体干警追捕。公安局刑侦队队长李某与胡某是同学，也被派往外地追捕胡某。此时李某提出回避申请，理由是他与胡某是同学，不宜参加本案的侦查工作。公安局负责人研究答复：由于公安机关警力有限，时间紧迫，李某仍需外出工作，是否回避的问题，待以后解决。李某遂接受指派，继续参与本案的侦查工作。后胡某被公安机关抓捕归案。检察机关对此案提起公诉后，人民法院一审以盗窃判处被告人胡某有期徒刑11年。胡某以原判决对部分赃物认定的数额偏高，量刑过重为理由提出上诉。第二审人民法院经审理查明：胡某所盗窃的赃物，经重新核定价值发现，其数额并非偏高而是偏低，数额应当为55万元，因此，原判决实际少认定10万元。据此，第二审人民法院经以原判决事实不清为由，以判决撤销了原判，并将案件发回原审人民法院重新审判。
问题：

公安边防检查的任务是（）。

A.对一切出入境人员的护照、证件和交通运输工具实施边防检查和管理。

B.维护国家主权、安全和社会秩序。

C.发展国内交往。

D.实施口岸查控，防止非法入境。